TYPICAL DIMENSIONS CHEAT SHEET 1
»» STRIPING: Solid white lines used to define conventional and buffered bike lanes are typically 6 - 8 in. wide. Diagonal lines within the bike lane buffer are common and are typically 4 - 8 in. wide stripes, placed at an angle of 30 45 degrees, every 10 ft.
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»» BIKE LANE WIDTH: Stripe bike lanes 5 - 7 ft. wide.
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»» BIKE LANE MARKING PLACEMENT: Place marking in center of lane, at beginning of lane and at periodic intervals based on engineering judgment (land use, vehicular speed etc.).
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»» BIKE LANE BUFFER WIDTH: Buffers must be defined by two white lines (typically 4 - 8 in. wide). Minimum buffer width is 18 in. If buffer is 3 ft. in width or wider, mark with diagonal striping.
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Barrier elements: 8 - ft. apart
2 5 - 7’ - Bike Lane
> 18”
10.5’ - Travel Lane
8’ - Parking Lane
»» PROTECTED BIKE LANES: Place barrier at center of buffer area, which should be a minimum of 3 ft. wide. Non-contiguous barrier elements should be placed 8 - 20 ft. apart. »» SHARED LANE MARKING »» Lateral Placement: Where parking is present, the MUTCD recommends sharrow markings be placed 11ft from the curb. If on-street parking is not present, the markings should be placed far enough from the curb to direct bicyclists away from gutters and other hazards (approx. 4 ft). On roads with a posted speed of 25MPH or less, place sharrows in center of travel lane. (not shown.) »» Spacing: Marking frequency should respond to context (land use, vehicular speed etc.) Sharrows might be 250 ft. apart on low-traffic, but high-speed routes, or 50 - 100 ft. apart along busier, slower speed streets (not shown).
102 · PROJECT APPLICATIONS
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Cheat sheet information based on NACTO Urban Bikeway Design Guide. For more detail, visit: nacto.org. Top: A demonstration planter-protected bike lane in Burlington, VT (Julie Campoli). (Note: For single-lane configurations, this design would require a barrier mountable by emergency service vehicles to be made permanent.) Bottom: A two-day buffered bicycle lane demonstration, Morgan Hill, CA (Street Plans).